CaratHunter
Plans
Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

VG • I/SI1 • GIA 2427873957

Certificate GIA 2427873957

Diamond specifications and retailer prices

From $10,038 NZD
HK$44,200 HKD
As of November 1, 2026
Save $12,783 NZD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $22,821 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2427873957. Listed at 19 retailers as of October 30, 2026, with prices from $10,038 to $22,821, a $12,783 spread on the same certified stone. NZ Jewellers lists it at $22,821. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2427873957
Dimensions8.59 × 6.30 × 4.02 mm
L/W Ratio1.36
Top View
8.59 mm6.30 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2427873957
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $14,904 NZD|Low: $9,563 NZD|High: $19,244 NZD|Avg: $13,583 NZD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8$10,038 NZD
Retailer 11$10,672 NZD
Retailer 2$11,409 NZD
Retailer 12$11,506 NZD
Retailer 4$12,362 NZD
Retailer 3$12,551 NZD
Retailer 5$12,864 NZD
Retailer 10$13,155 NZD
Retailer 1$14,904 NZD
Retailer 9$15,034 NZD
Retailer 7$16,764 NZD
Retailer 6$19,016 NZD

43 data points across 12 retailers

19 retailers$10,038 NZD to $22,821 NZD

B+
Cheapest Retailer
-
$10,038 NZD
HK$44,200 HKD
B+
Retailer 2
-
$10,672 NZD
$6,015 USD
View
B+
Retailer 3
-
$11,409 NZD
$6,430 USD
View
Final sale: no returns
B+
Retailer 4
-
$11,411 NZD
$6,431 USD
View
B+
Retailer 5
-
$11,505 NZD
$6,484 USD
View
B+
Retailer 6
-
$11,506 NZD
$6,485 USD
View
B
Retailer 7
-
$12,362 NZD
$6,967 USD
View
B
Retailer 8
-
$12,551 NZD
$7,074 USD
View
B
Retailer 9
-
$12,864 NZD
£5,709 GBP
View
Retailer 10
-
$13,155 NZD
A$11,406 AUD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$13,531 NZD
$7,626 USD
View
B
Retailer 12
-
$13,698 NZD
$7,720 USD
View
B
Retailer 13
-
$13,698 NZD
$7,720 USD
View
B
Retailer 14
-
$14,159 NZD
$7,980 USD
View
B
Retailer 15
-
$14,262 NZD
$8,038 USD
View
B
Retailer 16
-
$14,904 NZD
€8,000 EUR
View
B
Retailer 17
-
$16,764 NZD
ZAR 152,636 ZAR
View
B
Retailer 18
-
$19,016 NZD
£8,439 GBP
View
Most Expensive
C
NZ Jewellers
291f68da-725f-4ac0-8c62-3671c641db6a · Oct 30
$22,821 NZD
$12,862 USD
View
18 more retailers have this diamond
Prices start from $10,038 NZDSave up to $12,783 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.51ct Oval
$10,038 NZD